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Old 03-12-2018, 06:12 AM   #11
Ruko
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Originally Posted by B-O-B'03 View Post
You connect 12 volt batteries in parallel, to sum the available current, if you put 3 of them in series, you would sum the voltage and end up with 36 volts.

The 6 volt batteries would need to be connected in series, to get to 12 volts.

-Brian
Woops.. you are right.. i had it backwards. I went back and fixed it. Thanks

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Old 03-12-2018, 07:00 AM   #12
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I like the idea of using a battery isolator and having the 12V as a backup. I will put a separate outlet to near TV and entertain area that will come from an Inverter from the pair of 6 volts, that will be for TV, laptop and phone charger. And the House 12V will run LED lights and water pump, heater fan.

Question, Will a battery isolator work with a single 12v on one side and 2 6 volts on another (2 banks - my thought)?

Also yes, I will also carry a Champion 3500w Inverter/Generator Dual Fuel for Air conditioner needs or other.
To answer the isolator question yes because the out put of the 2 6 volt are 12 volts so in effect if you take the outputs it's the same as 2 12 volt batteries. To do it automatically search for "battery isolator, one alternator two batteries". Be prepared as this will cost $150+.The more economical solution is a manual disconnect...search "battery disconnect, two batteries". It will have a selector with 1,2. both. Both connects both batteries and you would need to use that to charge the batteries.
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Old 03-12-2018, 03:30 PM   #13
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To answer the isolator question yes because the out put of the 2 6 volt are 12 volts so in effect if you take the outputs it's the same as 2 12 volt batteries. To do it automatically search for "battery isolator, one alternator two batteries". Be prepared as this will cost $150+.The more economical solution is a manual disconnect...search "battery disconnect, two batteries". It will have a selector with 1,2. both. Both connects both batteries and you would need to use that to charge the batteries.
I thought that because we have two different systems (banks - 1 12v and 1 Duel 6s) that you cant just send straight charge to both as it will have trouble knowing what is charged to what point, and other things? That is why I thought I need an Isolator. Or if you are just saying set selector to 1 or the other, then that makes sense. But that means remember to watch battery levels for both and then manually switching daily.
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Old 03-12-2018, 04:54 PM   #14
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I thought that because we have two different systems (banks - 1 12v and 1 Duel 6s) that you cant just send straight charge to both as it will have trouble knowing what is charged to what point, and other things? That is why I thought I need an Isolator. Or if you are just saying set selector to 1 or the other, then that makes sense. But that means remember to watch battery levels for both and then manually switching daily.
Yes, manually switching them for both discharge and charge....probably a horrible solution.

Once you determine what your daily draw will be I would invest in the right amount of watts for the roof and T-105 batteries and forget the dual banks unless you do something automatically. I know you can get solar charge controllers for dual banks but why go through the added expense of that and an isolator when you can just sell your group 27 and get the required number of 6v batteries. I sold a pair of well cared for Grp 24's for 60 bucks...we were both happy with that.
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Old 03-12-2018, 07:29 PM   #15
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Yes, manually switching them for both discharge and charge....probably a horrible solution.

Once you determine what your daily draw will be I would invest in the right amount of watts for the roof and T-105 batteries and forget the dual banks unless you do something automatically. I know you can get solar charge controllers for dual banks but why go through the added expense of that and an isolator when you can just sell your group 27 and get the required number of 6v batteries. I sold a pair of well cared for Grp 24's for 60 bucks...we were both happy with that.
You know, that is sounding like a great idea. The question is not really how to do it,... more like what would experienced boondockers do or suggest.

Thanks
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Old 03-12-2018, 07:33 PM   #16
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Do you have any idea of your required power consumption?
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Old 03-12-2018, 08:02 PM   #17
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Do you have any idea of your required power consumption?
Not actual no.

Estimate these things

Refer
Coffee maker in AM
We have a 44in LCD TV - four hours night maybe - 120 watts
Furion DV3300 DVD movie included in TV use
Antena Booster - Winegard Roadstar
2 laptops - maybe 1 hour each
2 phone chargers
Microwave maybe one thing a day 2 mins 1350watts
LED house lighting ?
Frurion Ent system Stereo 3 hours a day
Furnace Fan - 50 watts when running
Various detectors
Water Pump

We will have a Generator For AC or Charge Batteries when needed. We are in Southern California, so it does get warm in the Western US in the summer.
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Old 03-13-2018, 04:22 AM   #18
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Since you'll likely be running the AC and thus the generator in the warm months, then relegate the coffee maker and microwave to the generator and your system can be reasonably sized but you really shouldn't pick your solar components without first giving your power consumption a lot of thought. Heck, one might even say that you don't need solar if you're planning on running the AC long enough to also charge the batteries.
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